Files
familienarchiv/frontend/src/routes/zeitstrahl/page.svelte.spec.ts
Marcel 5936f3a9ae feat(timeline): wire the grouping toggle into the Zeitstrahl page
Add the grouping $state beside the #780 layer-filter state, render the
GroupingControl stacked above the filter trigger (disabled, but kept in place,
when no loose letters remain), make the meta-line grouping label track the
active mode, and thread groupingMode into TimelineView — filter-then-group,
no refetch.

Refs #827
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-15 10:56:55 +02:00

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import { describe, it, expect, afterEach } from 'vitest';
import { cleanup, render } from 'vitest-browser-svelte';
import { page } from 'vitest/browser';
import * as m from '$lib/paraglide/messages.js';
import Page from './+page.svelte';
import { makeEntry, makeYear, makeTimelineDTO } from '$lib/timeline/test-factories';
afterEach(() => cleanup());
const event = (title: string) =>
makeEntry({
kind: 'EVENT',
derived: true,
derivedType: 'BIRTH',
title,
senderName: '',
receiverName: '',
documentId: undefined
});
// The route's PageData merges the layout's auth fields with the page load's
// timeline; the component only reads `timeline`, but the full shape keeps the
// test type-clean.
const pageData = (timeline: ReturnType<typeof makeTimelineDTO>) => ({
user: undefined,
canWrite: false,
canAnnotate: false,
canBlogWrite: false,
timeline
});
describe('/zeitstrahl page', () => {
it('wraps the timeline in a padded canvas surface, without an outer border (REQ-001)', () => {
render(Page, {
data: pageData(makeTimelineDTO({ years: [makeYear(1909, [makeEntry()])] }))
});
const canvas = document.querySelector('[data-testid="timeline-canvas"]');
expect(canvas).not.toBeNull();
expect(canvas?.classList.contains('bg-canvas')).toBe(true);
// The outer border was dropped in review (the page is already bg-canvas).
expect(canvas?.classList.contains('border')).toBe(false);
// the timeline renders inside the surface
expect(canvas?.querySelector('ol')).not.toBeNull();
});
it('renders the meta sub-line with range, counts, and grouping (REQ-002)', () => {
const dto = makeTimelineDTO({
years: [
makeYear(1909, [
makeEntry({ documentId: 'a' }),
makeEntry({ documentId: 'b' }),
event('Geburt')
]),
makeYear(1924, [makeEntry({ documentId: 'c' }), event('Tod')])
]
});
render(Page, { data: pageData(dto) });
const sub = document.querySelector('[data-testid="timeline-meta"]');
expect(sub?.textContent).toContain('19091924');
expect(sub?.textContent).toContain(m.timeline_letters_count({ count: 3 }));
expect(sub?.textContent).toContain(m.timeline_events_count({ count: 2 }));
expect(sub?.textContent).toContain(m.timeline_grouping_date());
});
it('omits the range segment when there are no year bands (REQ-002)', () => {
render(Page, {
data: pageData(makeTimelineDTO({ undated: [makeEntry({ documentId: 'u1' })] }))
});
const sub = document.querySelector('[data-testid="timeline-meta"]');
expect(sub).not.toBeNull();
expect(sub?.textContent).not.toContain('');
expect(sub?.textContent).toContain(m.timeline_letters_count_singular());
});
it('omits the entire sub-line for an empty timeline (REQ-002)', () => {
render(Page, { data: pageData(makeTimelineDTO()) });
expect(document.querySelector('[data-testid="timeline-meta"]')).toBeNull();
});
it('drops the letters segment instead of showing "0 Briefe" (REQ-002)', () => {
render(Page, {
data: pageData(makeTimelineDTO({ years: [makeYear(1914, [event('Geburt')])] }))
});
const sub = document.querySelector('[data-testid="timeline-meta"]');
expect(sub).not.toBeNull();
expect(sub?.textContent).not.toContain(m.timeline_letters_count({ count: 0 }));
expect(sub?.textContent).toContain(m.timeline_grouping_date());
});
it('drops the events segment instead of showing "0 Ereignisse" (REQ-002)', () => {
render(Page, {
data: pageData(makeTimelineDTO({ undated: [makeEntry({ documentId: 'u1' })] }))
});
const sub = document.querySelector('[data-testid="timeline-meta"]');
expect(sub).not.toBeNull();
expect(sub?.textContent).not.toContain(m.timeline_events_count({ count: 0 }));
});
it('uses singular count labels for exactly one letter and one event (REQ-002)', () => {
render(Page, {
data: pageData(
makeTimelineDTO({
years: [makeYear(1914, [makeEntry({ documentId: 'a' }), event('Geburt')])]
})
)
});
const sub = document.querySelector('[data-testid="timeline-meta"]');
expect(sub?.textContent).toContain(m.timeline_letters_count_singular());
expect(sub?.textContent).toContain(m.timeline_events_count_singular());
// never the "1 Briefe"/"1 Ereignisse" plural forms for a count of one
expect(sub?.textContent).not.toContain(m.timeline_letters_count({ count: 1 }));
expect(sub?.textContent).not.toContain(m.timeline_events_count({ count: 1 }));
});
});
describe('/zeitstrahl layer filter (#780)', () => {
const letter = (title: string, documentId: string) => makeEntry({ documentId, title });
const historical = (title: string) =>
makeEntry({
kind: 'EVENT',
type: 'HISTORICAL',
derived: false,
eventId: 'h1',
documentId: undefined,
title,
senderName: '',
receiverName: ''
});
const personal = (title: string) =>
makeEntry({
kind: 'EVENT',
type: 'PERSONAL',
derived: false,
eventId: 'p1',
documentId: undefined,
title,
senderName: '',
receiverName: ''
});
const mixed = () =>
makeTimelineDTO({
years: [
makeYear(1915, [
letter('Brief Eins', 'd1'),
historical('Erster Weltkrieg'),
personal('Umzug nach Berlin')
])
]
});
async function openBar() {
await page.getByTestId('timeline-filter-trigger').click();
}
it('hides letter cards when the Letters layer is off and restores them, with no fetch (REQ-005/002)', async () => {
render(Page, { data: pageData(mixed()) });
await expect.element(page.getByText('Brief Eins')).toBeVisible();
await openBar();
await page.getByTestId('timeline-filter-letters').click();
await expect.poll(() => page.getByText('Brief Eins').query()).toBeNull();
await expect.element(page.getByText('Umzug nach Berlin')).toBeVisible();
await page.getByTestId('timeline-filter-letters').click();
await expect.element(page.getByText('Brief Eins')).toBeVisible();
});
it('hides historical event cards when the Historical layer is off (REQ-004)', async () => {
render(Page, { data: pageData(mixed()) });
await openBar();
await page.getByTestId('timeline-filter-historical').click();
await expect.poll(() => page.getByText('Erster Weltkrieg').query()).toBeNull();
await expect.element(page.getByText('Brief Eins')).toBeVisible();
await expect.element(page.getByText('Umzug nach Berlin')).toBeVisible();
});
it('hides personal event cards when the Personal layer is off (REQ-003)', async () => {
render(Page, { data: pageData(mixed()) });
await openBar();
await page.getByTestId('timeline-filter-personal').click();
await expect.poll(() => page.getByText('Umzug nach Berlin').query()).toBeNull();
await expect.element(page.getByText('Brief Eins')).toBeVisible();
await expect.element(page.getByText('Erster Weltkrieg')).toBeVisible();
});
it('shows the filtered-empty message + reset below the open bar when all layers are off (REQ-006)', async () => {
render(Page, { data: pageData(mixed()) });
await openBar();
await page.getByTestId('timeline-filter-personal').click();
await page.getByTestId('timeline-filter-historical').click();
await page.getByTestId('timeline-filter-letters').click();
await expect.element(page.getByText(m.timeline_filter_empty_state())).toBeVisible();
await expect.element(page.getByTestId('timeline-filter-empty-reset')).toBeVisible();
// the generic TimelineView empty state is never what shows for a filtered-empty view
expect(page.getByText(m.timeline_empty_state()).query()).toBeNull();
// the one-click reset restores every layer
await page.getByTestId('timeline-filter-empty-reset').click();
await expect.element(page.getByText('Brief Eins')).toBeVisible();
});
it('recomputes the meta-line counts from the filtered view, so a hidden layer drops out of the totals (#780, resolves D1)', async () => {
render(Page, { data: pageData(mixed()) });
const meta = page.getByTestId('timeline-meta');
// all layers on → the one letter and the two events are counted
await expect.element(meta).toHaveTextContent(m.timeline_letters_count_singular());
await expect.element(meta).toHaveTextContent(m.timeline_events_count({ count: 2 }));
await openBar();
await page.getByTestId('timeline-filter-letters').click();
// the hidden letter leaves the count instead of lingering as "1 Brief";
// the event total is untouched
await expect.element(meta).not.toHaveTextContent(m.timeline_letters_count_singular());
await expect.element(meta).toHaveTextContent(m.timeline_events_count({ count: 2 }));
});
});
describe('/zeitstrahl curator affordances (#842)', () => {
const curated = (eventId: string) =>
makeEntry({
kind: 'EVENT',
type: 'PERSONAL',
derived: false,
eventId,
title: 'Auswanderung',
senderName: '',
receiverName: '',
documentId: undefined
});
const withWrite = (timeline: ReturnType<typeof makeTimelineDTO>) => ({
...pageData(timeline),
canWrite: true
});
it('renders the add-event CTA in a wrapping header when the viewer can write (REQ-001)', () => {
render(Page, { data: withWrite(makeTimelineDTO({ years: [makeYear(1909, [makeEntry()])] })) });
const add = document.querySelector(
'[data-testid="timeline-add-event"]'
) as HTMLAnchorElement | null;
expect(add).not.toBeNull();
expect(add?.getAttribute('href')).toBe('/zeitstrahl/events/new');
// The header wraps so the CTA drops below the heading at narrow widths (≤360px)
// rather than overflowing — REQ-001.
expect(add?.closest('header')?.classList.contains('flex-wrap')).toBe(true);
});
it('renders no add-event CTA when the viewer cannot write (REQ-002)', () => {
render(Page, {
data: pageData(makeTimelineDTO({ years: [makeYear(1909, [makeEntry()])] }))
});
expect(document.querySelector('[data-testid="timeline-add-event"]')).toBeNull();
});
it('threads canWrite to the timeline so a curator sees an event edit link (REQ-001/009)', () => {
render(Page, {
data: withWrite(makeTimelineDTO({ years: [makeYear(1924, [curated('p9')])] }))
});
expect(document.querySelector('a[href="/zeitstrahl/events/p9/edit"]')).not.toBeNull();
});
it('shows no event edit link to a reader (REQ-007)', () => {
render(Page, {
data: pageData(makeTimelineDTO({ years: [makeYear(1924, [curated('p9')])] }))
});
expect(document.querySelector('[data-testid="event-edit"]')).toBeNull();
});
});
describe('/zeitstrahl grouping toggle (#827)', () => {
const historical = () =>
makeEntry({
kind: 'EVENT',
type: 'HISTORICAL',
derived: false,
eventId: 'h1',
documentId: undefined,
title: 'Erster Weltkrieg',
senderName: '',
receiverName: ''
});
const mixed = () =>
makeTimelineDTO({
years: [
makeYear(1915, [
makeEntry({ documentId: 'd1', title: 'Brief Eins', linkedEventId: 'h1' }),
historical()
])
]
});
const radio = (value: string) => document.querySelector(`[data-value="${value}"]`) as HTMLElement;
it('updates the meta-line grouping label when a mode is chosen (REQ-016)', async () => {
render(Page, { data: pageData(mixed()) });
const meta = page.getByTestId('timeline-meta');
await expect.element(meta).toHaveTextContent(m.timeline_grouping_date());
radio('event').click();
await expect.element(meta).toHaveTextContent(m.timeline_grouping_event());
radio('thema').click();
await expect.element(meta).toHaveTextContent(m.timeline_grouping_thema());
});
it('regroups loose letters under their event client-side, no buckets in Datum (REQ-002/003)', async () => {
render(Page, { data: pageData(mixed()) });
expect(document.querySelector('[data-testid="letter-bucket"]')).toBeNull();
radio('event').click();
await expect.element(page.getByTestId('letter-bucket')).toBeVisible();
});
it('disables the grouping control when the Letters layer is off, keeping the mode (REQ-018)', async () => {
render(Page, { data: pageData(mixed()) });
radio('thema').click();
const control = page.getByTestId('grouping-control');
await expect.element(control).toHaveAttribute('aria-disabled', 'false');
// turn the Letters layer off → nothing to regroup
await page.getByTestId('timeline-filter-trigger').click();
await page.getByTestId('timeline-filter-letters').click();
await expect.element(control).toHaveAttribute('aria-disabled', 'true');
// the chosen mode is retained for when letters return
expect(radio('thema').getAttribute('aria-checked')).toBe('true');
// re-enabling restores the enabled control with the same mode (no reset to Datum)
await page.getByTestId('timeline-filter-letters').click();
await expect.element(control).toHaveAttribute('aria-disabled', 'false');
expect(radio('thema').getAttribute('aria-checked')).toBe('true');
});
});